package com.kuang.springcloud.controller;

import com.kuang.springcloud.pojo.Dept;
import com.kuang.springcloud.service.DeptService;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

//Controller主要是提供Rest服务
@RestController
public class DeptController {

    @Autowired
    private DeptService deptService;


    @HystrixCommand(fallbackMethod = "Hystrix_get")
    @GetMapping("/dept/get/{id}")
    public Dept get(@PathVariable("id") Long id){
        Dept dept = deptService.queryById(id);

        if (dept==null){
            throw new RuntimeException("id=="+id+",不存在该用户,或者信息不能找到");
        }
        return dept;
    }

     //使用hystrix的熔断机制,在上面的get方法执行失败之后利用熔断机制执行下面的Hystrix_get方法
    //备用方法
    public Dept Hystrix_get(@PathVariable("id") Long id){
        return new Dept().setDeptno(id)
                .setDname("id=="+id+"没有对应的信息")
                .setDb_source("no this DB");
    }



}
